Steueopticon



T. A. CAMPBELL.

STEREOPTICON.

APPLICATION FILED JUNE I7, I918.

1,318,541. Pate ted 001. 14,1919.

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T. A. CAMPBELL.

STEREOPTICON.

APPLICATION FILED JUNE l7. I918.

fu/enfir f. it fia iji iw MW 111s COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. C.

Patented Oct. 14, 1919.

2 SHEETS-SHEET 2.

I THURMAN A. o MrB LL, me awat -1mg." I

'S'IEREOPTICONL I To all whom itmay-concem Beit known that I, THURMAN A. BELL, a. citizen of the United States of America, and a resident of Chicago, in the county of Cook-,State of Illinois, have invented certain new anduseful Improvements in Stereopticons, of which thefollowing is a specification.

., This invention relates means forstoring a supply of lantern slides and other usual accessories of the apparatus,

all as will hereinafter more fully appear.

. In the accompanying drawing:

Figure 1 is a longitudinal sectional 91BX73? tion of a stereopticon embodying the present improvements. V

Fig. 2, is a detail transverse section on line X 1 Figs 1, i

Fig. 3, is a detail horizontal section on line X F, Fig. 2. I

Like reference numerals indicate like parts in the different views.

Referring to the drawing, 1 designates the inclosing casing or housing of a narrow rectangular box form and provided with a carrying handle for convenience in transportation. One side of the casing is open and provided with a hinged door 3 to afi'ord convenient access to the various parts and elements disposed in the interior of the casing. t p

4 designates a vertically elongated opening or passage having a hinged door 5. Said opening is formed in the wall of the casing 1 opposite to the open side. of the casing, and is adapted to receive the slide carrier hereinafter described, in the actual use of the apparatus.

6 designates the lamp house of the usual rectangular form, disposed in the upper portion of the rear part of the casing 1 and containing the usual incandescent electric lamp 7 or like source of illumination. v 8 designates the usual condensercaslng associated with the front wall of the lamp house 6, and carrying a pair of condenser lenses 9 and with the usual transverse skeleton holding frame 10 disposed in transverse alinement with the aforesald opening 5 of the main casing and adapted to support 1n Specification of Letters Patent.

Application filed June 17, 1918. -Seria1 No. 240,456.

CAMP.

to thattype' of" stereopticons or magic lanterns in which compactness, and ready portability are requisite features, and has for its object:

To provide a simple and :durable structural formation and association of parts adapteclto afford compactness, and provide j atentedOct.14, 1919.

proper operative position the stationary member of the slide changer hereinafter described, and which is clamped in place by a I I In the present structure the'front wall of set sorewoll, as illustrated in Fig. 1.

the casing 1; is disposed a distance in front of: the. lamphouse 6 and its accessories, so. that an extended front space in theinterior of the casing. is-provided and which is adapted to receive an extra lantern slide box,

or; other, usual, stereopticon accessory, when the apparatus is not inuse or packed for V tem-gem? transpo t i n- 12 designates an opening formed-inthe aforesaid front wall of the main casing lin linewith the optical axis of the condenser lenses 9 and adapted to permit thevpassage of the light, rays from said condenser'lenses tothe obj ective 13 of the apparatus.

.1 1 designates a .door orcover adaptedrtO .closetheopening l2 aforesaid. In the presnt mp ovement s do rcon i te he support for the objective 13, and is in turn upported and sliclingly guided by th f l; lowingmeans: 1

15 designates one or more depending guide brackets secured to the under side of the top wall of the main casing 1 and adapted for sliding engagement with a longitudinally arranged rod or bar 16, the forward end of which is secured to the door or cover 1 1, perferably by an angular extension as shown, to constitute the sole support for the door 1 1 and associated objective 13.

17 designates a set screw associated with the bracket 15 and sliding rod 16, to secure said rod at the point to which it is adjusted in the'operation of focusing the objective 13.

18 designates, a horizontal partition arranged midway the height of the main casing 1 and extending from the front wall of said casing to the lamp house 6 to constitute the top wall ofa containing chamber for a supply 5 l of the lantern slides'used with the apparatus. With a view to afford separated relation to the series of such lantern slides the .under surface of the partition 18 and the frame of a slide changer of any usual and suitable construction adapted to fit the skeleton holding frame 10 heretofore described, and in which said stationary frame is held in place by the set or clamping screw 11 aforesaid.

21 designates the usual lantern slide carrying frai'ne of the usual elongated skeleton form and adapted to have sliding movement in the aforesaid stationary frame 19 to carry the lantern slides into and out of the light path of the apparatus. In actual use the respective doors 3 and 5 heretofore described will be opened so that the slide changer may be arranged in the door openings for convenient and free manipulation.

Having thus fully described my said invention what I claim as new and desire to secure by Letters Patent, is

1. In a stereopticon of the type described the combination of a main inclosing casing of a rectangular box form and having an open side, a lamp house arranged in the upper rear end of the casing leaving a clear space therein in front of the lamp house, a condenser and a skeleton frame associated with said lamp house, the wall of the main casing opposite to the aforesaid open side having an opening in line with said skeleton frame, a slide changer supported by said skeleton frame a projecting lens arranged at the front end of the space aforesaid, and ahorizontal partition arranged midway the Oopies 0! this patent may be obtained for height of the main casing and extending from the front wall of the same to the lamp house and providing a containing chamber for accessories of the stereopticons, substantially as set forth.

2. In a. stereopticon of the type described, the combination of a main inclosing casing of a rectangular box form and having an open side, a lamp house arranged in the upper rear end of the casing leaving a clear space therein in front of the lamp house, a condenser and a skeleton frame associated with said lamp house, the wall of the main casing opposite to the aforesaid open side having an opening in line with said skeleton frame, a slide changer supported by said skeleton frame, a projecting lens arranged at the front end of the space aforesaid, a horizontal partition arranged midway the height of the main casing and extending from the front wall of the same to the lamp house, and a series of vertical partitions arranged between said partition and the bottom wall of the main casing to provide a series of individual containing chambers for accessories of the stereopticons, substan tially as set forth.

Signed at Chicago, Illinois, this 15th day of June, 1918.

THURMAN A. CAMPBELL.

five cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

